Hermann r



y mammal.

H..R. BOISSIER.

REGULATOR FOR DYNAMO ELECTRIC MACHINES.

No. 408,205.. Patented Aug. 6, 1889.

FIG-2 H P L I P Wi%nees: R wifign- N. vzTzns. Pmuxm w, wam m, n. c.

UNITED STATES PATENT OFFICE.

HERMANN R. BOISSIER, OF NEIV YORK, N. Y.

REG U LATOR FOR DYNAMO-ELECTRIC MACH l N ES.

SPECIFICATION forming part of Letters Patent No. 408,205, dated August 6, 1889.

Application filed October 17, 1888. Serial No. 288,388. (No model.)

To all whom it may concern: translating devices. The three coils F are in Be it known that I, IIERMANN R. BOISSIER, parallel circuit in one of said leads (2, preferaof the city, county, and State of New York, bly that connecting with the positive pole of have invented an Improvement in Regulators the dynamo. This arrangement makes them 5 for Electric-Light Circuits, &c., of which the offer but small resistance and insures a sensifollowing is a specification. tive regulator. If the regulator-coils were in My invention has reference to regulators series or of high resistance, they would create for electric-light circuits or others having a objectionable results when the line resistance o varying resistance between the leads from the was materially varied, and would also reduce o dynamo; and it consists of certain improvethe efficiency of the apparatus.

ments which arefully set forth in the follow- R is the external shunt'circuit of the field ing specification, and shown in the accompacoils, and includes the lever K. The upper nying drawings, which form part thereof. contact M connects with the shunt-circu" R The object of my invention is to provide withoutinterposing any resistance. The next T5 automatic mechanism which shall vary the lower contact M inserts a resistance 0 of, for resistance in the shunt or field-coil circuit of a example, five ohms, and the lower contact M low-tension-current machine adapted for elecinserts a resistance N of, for example, five tric lighting or equivalentpurposes. \Vhen all ohms. As the lever K is shifted upward over of the lights are I; circuit, the resistanc s the contacts M, it first cuts out one of the five 20 out of circuit. When a given number of the ohms and leaves five ohms resistance, and lamps are cut out, then the line-resistance is then removes the five ohms resistance. It greater, but the work required of the dynamo will be observed that the two lateral cores II is less; and 116 .46 a port n of Hi" resistance are arranged considerably above the central is automatically cut into the shunt or fieldcore II, which latter maybe hung on a rod I 25 coil circuit. If more of the lamps are cut out, and made adjustable by a nut 2' or otherwise.

the regulator automatically puts in more re- This difference in location will make the apsistance. In practice, on small circuits of, say, paratus more positive in shifting and less twenty-five lamps for house use,I have found liable to fluctuations, and with but small two auxiliary resistances sufficient for the movements to the cores it insures accurate 3c purpose. By employing these resistances too movements to the lever K with given changes much current cannot be passed through the in the line resistance. lamps when but 10" only are on circuit and In the construction shown in Fig. 2 the thereby life of tne lamp be shortened. regulator is arranged in shunt relation with In the 'ings, Figure 1 is a general view the lamps I, and not in series, as before.

35 illustrating my invention with the regulator- S is the shunt-circuit, including the coilsF magnets in series with the line or leads, and of the regulator, which in this case would be Fig. 2 is a similar view when the regulatorwound with fine wire, so as not to shunt too magnets are placed in shunt relation with the much current from the lamps. 1e; ds and lamps. If during the running of the apparatus all 40 A is the dynamo, of any suitable construcof the lamps are in circuit, then the lever K tion. will rest upon the upper contact M, giving the B is the commutator, and C G the brushes. full current to the shunt field-coils, and as the Dis the regulator-frame, and supports three lamps are cut out the lever descends to the bobbins E, having each two coils of coarse wire other contacts, first cutting in the smaller re- 45 F. Vorking in these bobbins or helices are sistance and then the larger. It is clear that three cores II II II, supported from a bar G, there maybe a series of resistances to be thus hung by a head J to a switch-lever K, pivoted cut in and out of the field-coils; but this is at L to the frame D. This lever K has a connnot necessary in a small plant with, say, terbalancing-weight 7c, working 011 a screw, twenty-five lamps.

50 and a spring-contact m, which plays over the The details maybe modified without departcontacts M M M. The lines or leads are reping from my invention. resented by e, and include the lamps P or other Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of a shunt-wound dynamo-electric machine, a line-circuit leading therefrom, translating devices in said linecircuit, a circuit in series with the shunt-coils of the dynamo, one or more resistances, a switch having an adjusting-weight to insert or remove said resistances in the shunt-circnit of the dynamo, and an automatic electromagnetic regulator, consisting of two or more helices in parallel eircuithaving movable and separate cores connected to the switch for actuating said switch upon varying the line resistance arranged in circuit with the line.

2. The combination of a shunt-wound dynamo-electric machine, a linecircuit leading therefrom, translating devices in said linecircuit, a circuit in series with the shunt-coils of the dynamo, one or more resistances, a switch to insert or remove said resistances in the shunt-circuit of the dynamo, and an automatic electro-magnetic regulator, consisting of two separate helices, and separate relatively-adjustable cores therefor connected with the switch for actuating said switch upon varying the line resistance arranged in series with the line.

3. The combination of a shuntwound dy' name-electric machine, a line-eircuit leading therefrom, translating devices in said linecircuit, a circuit in series with the shunt-coils of the dynamo, one or more resistances, a switch to insert or remove said res tances in the shunt-circuit of the dynamo, and an automatic electro'inagnetic regulator, consisting of two or more helices having two or more cores connected to the same support and in which one of said cores arranged lower down into its helix than the others.

t. A regulator for a shuitit-wound dynamoelectric machine and line-circuit with a varying resistance, consisting of three helices in circuit with the line, three cores therefor, one of which enters its helix to a greater extent than the others, and a switch actuated by said three cores to insert or remove a resistance into or out of the shunt-circuit of the dynamoelectric machine.

5. A regulator for a shunt-wound dynamoelectric machine and line-circuit with a varying resistance, consisting of three low-resistance helices in parallel circuit with the line, three cores therefor, one of which enters its helix to a greater extent than the others, and a switch actuated by said three cores to in sort or remove a resistance into or out of the shunt-circuit of the dynaino-electric machine.

In testimony of which invention 1 hereunto set my hand.

IIERMANN 1t. .BOISSIER.

\Vi tnesses:

HENRY II. KUnN, 'lnnonon IIERRMANN. 

